Sources:
- CLAYTON, Mary (2007). The Needlecrafter's Companion. 1001 Stitch Terms and Techniques, London: Collins and Brown, pp. 169-170.
- EATON, Jan (1986). The Complete Stitch Encyclopedia. Twickenham: Hamlyn, pp. 148, 150.
Digital source of illustration (retrieved 28 January 2017).
WV